The Study of Heavy Metal Uptake by Weeds from Contaminated Soils

• Main Authors: Shu-yin Guo, 郭書吟
• Other Authors: Guo-chen Lee
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/5yp33k

碩士 === 朝陽科技大學 === 生物技術研究所 === 94 === Seed germination and growth experiments of fourteen plants including: Caper euphorbia seed, Goosegrass, Broadleaf carpetgrass, Junglerice, Peacock-plume grass, Bermudagrass, Natalgrass, Crabgrass, Zoysia grass, Centipede grass, Bur grass, Crowfoot grass, Feather lovegrass, and Feather cockscomb were carried out by growing in the heavy metal polluted soil for evaluating their phytoremediation potential. The results indicated bur grass, junglerice, bermudagrass, and feather cockscomb can survive on high polluted soil with the high concentration of Cd (4.3 μg/g), Cr (857.2 μg/g), Cu (963.3 μg/g), Ni (621.7 μg/g), Pb (98.3 μg/g), and Zn (994.9 μg/g). Futhermore, these plants can uptake the heavy metals from the soil. Heavy metals uptake by these pants was in the following order: Zn＞Ni＞Cu＞Cr＞Pd＞Cd. The Cd, Cu, Ni, Zn content of junglerice were 2.9 μg/g, 98.48 μg/g , 367.3 μg/g, and 332.7 μg/g, respectively. Feather cockscomb contained 31.75 μg/g of Cr, and 11.1 μg/g of Pb in the dry matter. According to the biomass, growing rate of plants and heavy metal accumulate ability, it was concluded that Junglerice and Feather cockscomb have higher phytoremediation potential. than the other plants.